JP3380771B2 - Glove box panel polishing equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing device for a transparent panel of a glove box used in a nuclear fuel manufacturing process or the like.

[0002]

2. Description of the Related Art In order to handle radioactive materials such as nuclear fuel materials in an airtightly isolated state, a glove box, which is a closed box surrounded by panels to which gloves are attached, is widely used. The operator handles the radioactive substances contained in the glove box from the outside of the glove box through the glove attached to the glove box panel, and performs maintenance, inspection, adjustment, etc. of various devices placed in the glove box. To do. For this reason, the transparency of the glove box panel is essential. But,
It is unavoidable that the transparency will deteriorate due to secular change including radiation deterioration and dust scattering during long-term service.

As a conventional method for ensuring the transparency of the glove box panel, the inner surface of the glove box panel can be wiped and repaired to some extent by wiping the inner surface of the glove box panel through the glove within the reach of the operator. The method of keeping the field of view was adopted. The glove box panel that could not be repaired had to be replaced with a new glove box panel.

[0004]

When exchanging the glove box panel as described above, it is necessary to open the glove box storability, so that the worker must work with heavy equipment such as radiation protection suit for a long period of time. Has to be done, which has been a cause of increasing the work cost.

Therefore, according to the present invention, even if the transparency of the glove box panel is deteriorated due to aging deterioration including radiation deterioration and dust scattering, the entire surface of the glove box panel can be efficiently operated in a short period of time without replacement. It is an object of the present invention to provide a polishing device for a glove box panel, which can reduce the exposure during the polishing work while polishing to restore the transparency.

[0006]

A glove box panel polishing apparatus according to the present invention for solving the above-mentioned problems includes:
The following description can be made with reference to the reference numerals in the accompanying drawings showing the embodiments. That is, the substrate (1
The magnet (31) is attached to the tip of the rotating shaft (12) that is projected to the surface side of (1).
The first rotary holder (30) with a built-in spline shaft structure
The first rotation holder can be rotated by rotating the rotation shaft with the motor (13) fixed to the back side of the board by fitting more ; at least 3 which is projected from the board surface toward the panel outer surface outside the glove box. Book spacing bar (1
4) are arranged along the outer circumference of the first rotary holder so as to be equiangular in the circumferential direction, and hold the panel outer surface and the substrate surface at a predetermined interval; each of the interval holding bars makes contact with the panel outer surface. the ball bearings (15) attached to the tip portion; the surface of the first rotating holder facing the outer panel surface, for removably affixed first abrasive paper by the magnetic force of the magnet built in the first rotating holder A plate (32) is attached, and a first abrasive paper (33) or buff (34) is releasably attached to the surface of the first plate; on the back side of the outer surface of the panel facing the first rotation holder, that is, the inner surface of the panel. , A second rotary holder (40) having a built-in magnet (41) is arranged so that the second rotary holder can rotate inside the panel together with the first rotary holder that rotates outside the panel, and face the inner surface of the panel. To the surface of the second rotating holder, to the second holder A second polishing paper sticking plate (42) is detachably attached by the magnetic force of the stored magnet, and the second polishing paper (43) or buff (44) is peelably stuck to the surface of the second plate. Attach; handle on the back of the board
(16) is fixed; thereby, the handle is operated to move the ball bearing at the tip of the distance maintaining rod along the panel outer surface while contacting the panel outer surface, and the first rotating holder and the second rotating holder are attached. It is possible to simultaneously polish the outer surface and the inner surface of the panel by rotating them together.
And the first rotation holder by the spline shaft structure.
By changing the distance from the outer surface of the panel,
Fix the holder and place the first rotation holder in contact with the outer surface of the panel.
By rotating without
Rotate the 2nd rotation holder (40) and polish only the inner surface of the panel
It is characterized by being able to do so.

[0007]

[0008]

1 to 4 are a plan view, a partially broken side view, a front view and a rear view, respectively, showing an embodiment of a main body of a glove box panel polishing apparatus of the present invention.
The polishing apparatus body 10 is used outside the glove box, and the panel outer surface (not shown) outside the glove box is located in the left side portion of FIGS. 1 and 2. The rotary shaft 12 projects from the surface side of the substrate 11 of the polishing apparatus body 10 (the side facing the panel outer surface), and the first rotary holder 30 has a spline shaft structure at the tip of this rotary shaft.
More fitting are mounted, it is possible to rotate the first rotating holder 30 by rotating the rotary shaft 12 by a motor 13 fixed to the rear surface side of the substrate 11 in. The rotary holder 30 has a disk shape, and for example 4
A permanent magnet 31 made up of rare earth magnets or the like is built in (see FIGS. 5 and 6) so that a polishing paper attaching plate 32 and a second rotary holder 40 described later can be detachably attached by magnetic force. Has been done.

From the surface of the substrate 11, three spacing bars 14 further project toward the outer surface of the panel. These distance maintaining rods 14 are arranged parallel to each other along the outer circumference of the first rotation holder 30 so as to be equiangular in the circumferential direction, and in the case of three distance maintaining rods, an angle of 120 °. Are arranged in the circumferential direction (see FIG. 5) so that the outer surface of the panel and the surface of the substrate 11 are held at a predetermined interval. Each interval holding rod 14 thereof Furthermore, the tip end portion in contact with the outer panel surface, have attached Borubeari <br/> in g 15, when moving in a state where the respective intervals holding bar 14 with a panel outer surface The rotation of the ball bearing 15 enables the smooth movement along the outer surface of the panel. It should be noted that although three or more gap holding rods 14 may be provided, at least three gap holding rods 14 must be provided in order to securely hold the panel outer surface and the surface of the substrate 11 at a predetermined distance. Since the spacing bar 14 is provided along the outer periphery of the first rotary holder 30 so as to surround the rotary holder, it is possible to move the polishing apparatus body 10 along the panel surface to perform polishing work. It also has a function of preventing the rotating holder 30 from rotating and colliding with an obstacle.

Two handles 16 are fixedly attached to the rear surface of the substrate 11, and an operator can grip the handles 16 and move the entire polishing apparatus main body 10 along the outer surface of the panel.

1 and 2, reference numeral 17
Indicates a speed controller of the motor 13, and the rotation speed of the first rotation holder 30 can be controlled by adjusting the meshing of gears in the reduction gear box 18 with this controller. Reference numeral 19 is a connection plate for connecting the reduction gear box 18 and the motor 13,
Reference numerals 20 denote power supply connectors of the motor 13, respectively.

In addition to the polishing apparatus body 10 shown in FIGS.
The polishing apparatus of the present invention, as shown in FIG. 6, includes a second rotary holder 40 for polishing the inner surface of the panel P inside the glove box. The second rotation holder 40 is arranged on the back side of the outer surface of the panel P facing the first rotation holder 30, that is, on the inner surface of the panel, and has a disk shape like the first rotation panel 30. , For example, four permanent magnets 41 are built therein. Therefore, the panel P
Since the first rotary holder 30 and the second rotary holder 40 face each other with the magnet 31 sandwiched between them, they are attracted to each other by the magnetic force of the magnets 31 and 41 contained in the rotary holders 30 and 40. With the rotation of the rotary holder 30, the second rotary holder 40 also rotates.

As shown in FIG. 7, each of the first and second rotary holders 30 and 40 has a surface facing the panel surface,
The first and second polishing paper sticking plates 32, 42 are detachably attached by the magnetic force of the magnets 31, 41 contained in the rotary holder, and the surfaces of the plates 32, 42 are further polished by the first and second polishing. The papers 33 and 43 are releasably attached using an adhesive or a double-sided adhesive tape, and used for panel polishing. Alternatively, as shown in FIG. 8, the buffs 34 and 44 are releasably attached to the first and second polishing paper attaching plates 32 and 42, and the liquid abrasives 34a and 44a are applied to the buffs. Used for panel polishing.

As mentioned above, a plate for sticking abrasive paper
The 32, 42 and the rotary holders 30, 40 are attracted by a magnetic force and are detachably attached, but the polishing paper sticking plate must also be surely rotated as the rotary holder rotates.
Therefore, in a preferred embodiment of the present invention, as shown in FIGS. 7 and 8, the first or second rotary holder 30, 40 facing the first or second polishing paper sticking plate 32, 42 is used. Cross-shaped concave grooves 35, 45 are engraved on the surface of the cross-shaped groove, and the cross-shaped concave grooves 35, 45 are formed on the surface of the first or second polishing paper sticking plate 32, 42 facing the first or second rotary holder. Groove 35,
Cross-shaped convex grooves 36 and 46 that fit with 45 are formed. Due to the fitting of the cross-shaped concave and convex grooves, the polishing paper sticking plates 32, 42 are surely rotated with the rotation of the rotary holders 30, 40, and the contact surfaces of both are integrated without idling. Will rotate.

An operation procedure for simultaneously polishing the outer surface and the inner surface of the glove box panel using the polishing apparatus of the present invention having the above structure will be described below.

(1) First, as shown in FIG. 7, abrasive paper 33, 43 is releasably attached to the abrasive paper attaching plates 32, 42 using an adhesive or a double-sided adhesive tape. Prepare as many pieces as necessary to polish both sides of the glove box panel. In addition, as shown in FIG. 8, buffs 34 and 44 are removably attached to the polishing paper attachment plates 32 and 42, and liquid abrasives 34a and 44a are applied to the surface of the buff, which is also required. Prepare the number of sheets. The polishing papers 33, 43 are used for rough polishing of the glove box panel, while the buffs 34, 44 coated with the liquid polishing agent are used for final polishing.

(2) The second rotary holder 40 is bag-in in the glove box, and the polishing paper or the buffed plate 42 prepared above is also used as many gloves as necessary to polish the inner surface of the glove box panel. Bag it in the box beforehand.

(3) As shown in FIG. 6, the first rotary holder 30 is brought into contact with the outer panel surface outside the glove box.
And the second rotary holder 40 abutting against the inner surface of the panel are faced with the panel P sandwiched therebetween, and both are attracted by magnetic force.
Plates 32 and 42 to which polishing papers 33 and 43 are attached are attracted to the rotary holders 30 and 40 by magnetic force.

(4) The rotary shaft 12 of the polishing apparatus main body 10 is fitted into the first rotary holder 30 outside the glove box and 3
With the ball bearing 15 at the tip of the interval holding rods 14 of the book being pressed evenly against the outer surface of the panel, the polishing paper 33 on the first rotation holder 30 contacts the outer surface of the panel so that the polishing paper 33 contacts the outer surface of the first shaft. Position and fix the rotation holder 30 with screws or the like.

(5) The inner surface and the outer surface of the panel P are simultaneously polished by starting the motor 13 of the polishing apparatus body 10 and rotating the first and second rotary holders 30 and 40.
The movement of the polishing apparatus body 10 is performed by an operator holding the handle 16 by hand outside the glove box and moving the handle 16 vertically and horizontally along the outer surface of the panel.

(6) Durability of polishing paper 33, 43 (about 5 minutes)
When the time has passed, the magnetic attraction between the first rotary holder 30 and the second rotary holder 40 is removed, and the worn abrasive paper 33, 4 is removed.
The abrasive paper attaching plates 32 and 42 to which 3 is attached are removed from the rotary holders 30 and 40, and replaced with the abrasive paper attaching plates to which new abrasive paper is attached.

(7) After the rough polishing with the polishing papers 33, 43 is completed, the liquid polishing agents 34a, 44 are subjected to the same operation as the above (6).
The buffs 34 and 44 coated with a are replaced with the polishing paper sticking plates 32 and 42 to which the buffs 34 and 44 are attached, and finish polishing is performed. Wipe off the polishing dust adhering to the polished surface of the panel with a paper towel moistened with water.

(8) Used polishing paper 3 after polishing work
3,43 and buffs 34,44 are plates 32,42 for sticking abrasive paper
Peel it off and discard it, and use the polishing paper sticking plate repeatedly.

Although both sides of the glove box panel can be simultaneously polished by the above procedure, only the inner surface of the panel can be polished if necessary. In this case, in the step (4), the ball bearings 15 at the ends of the three spacing bars 14 are pressed against the outer surface of the panel evenly, and the polishing paper sticking plate 32 is not attached. The first rotary holder 30 is positioned with respect to the rotating shaft 12 so that the surface of the rotary holder 30 is separated from the panel outer surface by about several mm so as to idle without contacting the panel outer surface. In this state, the first
When the second rotary holder 40 having the polishing paper 43 and the polishing paper sticking plate 42 attached thereto is arranged on the inner surface of the panel facing the rotary holder 30, the second rotary holder 40 is magnetically coupled to the first rotary holder 30. The first rotation holder 30 rotates as the first rotation holder 30 idles, and only the inner surface of the panel can be polished.

[0025]

As can be seen from the above, according to the glove box panel polishing apparatus of the present invention, even a glove box panel having a reduced transparency can be polished to a degree of transparency similar to that of a new article.

As a result, even a panel that had to be replaced in the past due to a decrease in transparency can be repaired without replacement. The exchanged used glove box panel had to be treated as radioactive waste,
When the polishing apparatus of the present invention is used for polishing and restoration, the frequency of discarding used panels is reduced, and the radioactive waste generated when the polishing apparatus is used is only used polishing paper and buffs. The volume of waste can be significantly reduced. By the way, the size of a general glove box panel is 1000 mm in length × 1000 mm in width × thickness 1
In contrast to 0 mm, the amount of waste generated by one polishing operation in the polishing apparatus of the present invention is as small as about 80 sheets of used polishing paper having a diameter of 60 mm.

Further, in the conventional replacement work of the glove box panel, since the storability of the glove box has to be opened, the worker needs heavy equipment such as radiation protection suit, and therefore the cost required for the replacement work. Although it has been a cause of increasing the cost, when the polishing apparatus of the present invention is used, since the glove box does not open the storage property, there is no need for radiation protection measures and the work cost can be reduced.

Furthermore, according to the polishing apparatus of the present invention,
It is only necessary to replace the plate for sticking the polishing paper inside the glove box, and it is easy and quick to attach / detach this plate to / from the rotary holder in the glove box. A short time of about 30 seconds is sufficient, and it is possible to reduce exposure during work.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a panel polishing apparatus body of the present invention.

FIG. 2 is a partially cutaway side view of the embodiment of FIG.

FIG. 3 is a front view of the embodiment of FIG.

FIG. 4 is a rear view of the embodiment of FIG.

5 is an explanatory diagram showing a relationship between a first rotation holder and a spacing bar in the embodiment of FIG. 1. FIG.

FIG. 6 is an explanatory view showing a state in which the polishing apparatus main body and the second rotary holder of the embodiment of FIG. 1 are arranged with the glove box panel sandwiched therebetween, and the panel outer surface and the inner surface are simultaneously polished.

FIG. 7 is an explanatory view showing a work of assembling the polishing paper sticking plate and the polishing paper by superposing them on the rotary holder.

FIG. 8 is an explanatory view showing an operation of superposing and assembling a polishing paper sticking plate and a buff on a rotary holder, and further applying a liquid abrasive to the buff.

[Explanation of symbols]

10: Polishing device body 11: Substrate 12: Rotation axis 13: Motor 14: Spacing bar 15: Ball bearing 16: Handle 30: First rotation holder 40: Second rotation holder 31, 41: Magnet 32, 42: Plates for sticking abrasive paper 33, 43: Abrasive paper 34,44: Buff 35, 45: concave groove 36, 46: convex groove

Continuation of the front page (56) Bibliography Shou 60-109750 (JP, U) Sui 56-28854 (JP, U) Sui 46-28687 (JP, Y1) (58) Fields investigated (Int .Cl. ⁷ , DB name) B24B 23/00-23/02 B24B 7/18 G21F 7/04 G21F 9/28 541 G21F 9/28 551 B24D 9/00 A47L 1/00

Claims (2)

(57) [Claims] 1. A rotary shaft projecting to the front surface side of a substrate (11)
First rotating holder (30) with magnet (31) built in at the tip of (12)
The first rotary holder can be rotated by rotating the rotation shaft with the motor (13) fixed to the back side of the board by fitting with the spline shaft structure ; protruding from the board surface toward the panel outer surface outside the glove box. At least three spaced-apart spacing rods (14) are arranged along the outer circumference of the first rotary holder so as to be equiangular in the circumferential direction to hold the panel outer surface and the substrate surface at predetermined intervals; the ball bearings (15) attached to the holding rod tip spacing holding rod is in contact with the outer panel surface; the surface of the first rotating holder facing the outer panel surface, removable by the magnetic force of the magnet built in the first rotating holder A first polishing paper attachment plate (32) is freely attached, and the first polishing paper (33) or buff (34) is releasably attached to the surface of the first plate; a first rotation holder and The back side of the outer surface of the facing panel The KazuSatoshi panel inner surface, the magnet (4
The second rotary holder (40) containing 1) is arranged so that the second rotary holder can rotate inside the panel together with the first rotary holder rotating outside the panel, and the second rotary holder facing the inner surface of the panel. A second polishing paper sticking plate (42) is detachably attached to the surface of the rotating holder by the magnetic force of the magnet built in the second holder, and the second polishing paper (42) is attached to the surface of the second plate. 43) or buff (44) is releasably attached; handle (16) is fixed to the back side of the substrate;
By operating the handle to move the ball bearing at the tip of the spacing bar along the outer surface of the panel while contacting the outer surface of the panel, and rotating the first rotary holder and the second rotary holder together, the outer surface and the inner surface of the panel are rotated. Of the spline shaft structure.
By changing the distance between the first rotating holder and the outer surface of the panel.
And fix the first rotary holder to the rotary shaft.
By rotating the da without contacting the outer surface of the panel,
Rotate the second rotation holder (40) placed inside the panel
The glove box panel polishing device is characterized in that only the inner surface of the panel can be polished. 2. A first or second polishing paper sticking pre- coating plate.
The first or second rotary holder (3
(0,40) surface is provided with a cross-shaped groove (35,45),
Adhesion of the first or second abrasive paper facing the second rotary holder
A cross that fits the cross-shaped groove on the surface of the attachment plate.
A convex groove (36, 46) having a shape is provided.
A polishing device for the glove box panel described.